F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
Transmission Mode Switch: Description and Operation
TRANSMISSION CONTROL SWITCH
Transmission Control Switch (TCS)
Transmission Control Switch (TCS)
The Transmission Control Switch (TCS) (Figures 43 and 44) signals the PCM with key power whenever the TCS is pressed. On vehicles with this
feature, the Transmission Control Indicator Lamp (TCIL) lights when the TCS is cycled to disengage overdrive. The operator of the vehicle controls
the position of the TCS.